Tile panel backing



N. H. CEDERQUIST TILE PANEL BACKING Filed July 2 www MM 5v w w Patented Feb. 18, i930l UNITED STATE TILE PANEL BACKING,

Application filed .Tilly 2, 19128.A

rl`his invention relates to a backing adapted to hold tile or veneering of like character. Panelsl having a facing of tile, stone, glass or like material have been found desirable in buildings, store fixtures and elsewhere. Such panels should be light in weight7 have veneering firmly affixed to the surface, and -not be subject to warping. A Wood backingmeets these requirements as to weight and ease of installation. However, a single sheet of wood, unless special provisions are made, is subject to warping and expansion, especially in the direction of the libres. If the dierence of the coeflicients of expansion of the veneer facing and backing are of substantial magnitude, a strain is exerted on the material binding the facing to the backing, which is often sufficient to cause cleavage between the backing and facing, resulting in chipping, cracking ofthe facing and breakage. By the use of a yielding cement or adhesive, this has been satisfactorily overcome in many instances. As a further aid in preventing warping, expansion, and cleavage stresses, a neutralizing backing has been used. This has been accomplished by the use of a multiple ply board with the plies arranged with their grains crosswise of one another. Kerfs eX- tending crosswise of the grain have also been employed. These kerfs unless they extend through a ply will not prevent warping. lf extended through the ply, warping lateral to the faces may occur. Veakening of the plies also results. The objects of the present ing vention are to provide a backing of wood having any or all of the following features: slots extending therethrough; expansible binding ties bridging the slots; and ties embedded and keyed in a manner to prevent lateral displacement of the walls of the slots.

These objects together with other objects and corresponding accomplishments are obtained by means of the embodiment of my invention illustrated in the accompanying drawing, in which Fig. l is a face view of a fragment of a tile panel, part of the facing being broken away tvo'show the backing, and portions of the plies being broken away; Figs. 2 to 5 ini serial no. 289,892.

elusive are sections asseen on thelines. correspondingly numbered inFig. 1.7k '.l

Referring more particularly to nthe. draw-A ing, a panel comprising a backing A has .tiles B secured thereto by'an vadhesive cement, CL The cement is preferably a yielding adhesive having sufficient elasticity to 4compensate .for differences in the'coeiiicients of expansion be-y tween the tiles and the backing. Cement D is used to lill the joints. sov as to point up the tile facing.- Thetiles are preferably ceramic and shown crowned and covered on their fronts with a glazed surface. They are impervious to moisture. f Y

The invention resides particularly in the herein 1t comprises` backing, and as shown a three ply board, the plies being indicated by 6, 7 and 8. Each plyisr-of wood and preferc bly arranged with lits grain crosswise of the grains in the yother ply. 'This pro= vides a neutralized backing which willA not warp. Extending through the backing:l from face to face are a vmultiplicity of slots 9. These slots provide for distributed eXpansion, being vexpansive joints.; 1 TheyA also serve for egress of moisture which-.may bef come entrapped between the facing `and the backing. lf such openings are not provided, the moisture mustpermeatethe wood.- g Such permeation is slow and tends to cause separation of. the plies with resultant warping. The slots tend to wea-ken the backingg-and the edges thereof -i may becomedisplaced. To counteract this, binders, l0 `aref-provided. rlhese binders are preferably-strips lof' corrugated metal, which are disposed to bridge the slots and are embedded in .the sheet. They tie the 'edge' wails. of. theY sheetseand the slots together. ln ordergtoprevifdevfor holding I the sheets ment at the slots, the binders are preferably upset as indicated by 11 in Fig. 4. Thiskeys the binders and securely locks the sheet at the slots. It is obvious that I haveprovided a backing, which vis non-warpable, permits quick hardening of the adhesive, and has suiiicient flexibility to adapt itself to the tiles.

What I claim is l. A backing for the purpose described comprising a sheet of fibrous material with againstglateral displace- Y a multiplicity of elongated slots extending i therethrough `romface' toV face, and corrugated binder strips bridging said slotsl and embedded at their ends in said sheet, the Vedges of said strips .being keyed at their ends tofsaid sheet to prevent lateral' displacement of the-:Walls ofsaiid sheet at thcjeg.v slots.

2. Av 'back-ing tor-v the purposej described y i comprising a'multiple ply Wood she et,s aid i `tending through said sheets from face to face,

` comprisingaJ sheet ofnon-Warpable material v plies being disposed ,with their grainsmcross- Wise, a vmultiplicity of el-ongatedsl-ots eX'-r and corrugated binder strips bridging said slots and embedded at theviendsin said-sheet, said strips being co- 8. A backing?)lfrr the, purpose; `described with 'a multiplicity of elongatedislotsfextend rug-ated'bindenstripsbridging said slots and Y ingitherethrough .from face: tol face, andy cor-v ernbe'ddedat. their ends in vsaid sheet, said stripsbeingxcoextensiire; Witlfiy the; thickness of saidfsheet', the edges of said strips being 'lib keyed atE their; ends te. said sheet. toxpreyent l Vlfatevra'lidisplancementiovf the Walls of; saidsheet Y atthe.slotsiV f backingY *for* the purpose described comprising a sheetof non-Warpab'le material vvdtli'wa multiplicity olfje-longated;y slots extendingtlierethrough. from face to face, and cor- Y rugated rnetalfbinder; strips bridgingr said slots andzembeddediiat their ends in said sheet,

said stripsfbeing cosextensiye. withthethickL ness et said sheet,` the edges of said strips being upset to keyf the s tripsto said sheets andf otsaidisheetatlthe slots.V v

'A` backing for the purpose described comprisinga multiple plyi Wood sheet, the

plies, being disposed With/their, grain ex?lV tendingcrosswise, a 4multiplicity ofv elon-. gated'slots-extendingithrough said sheet from Yificey tol fated-.and corrugated' metal Abinder f Stfapsblid'gng said? slots and embedded ,at d said stripsfbeingv cp'extensye with the thickness Vof said sheet, .Y

:their ends in said sheet, 1

thev edges ofsaid stri-ps being upset at their riuso* endsto key said sheet and 'prevent lateral vdisplacemento.ii thevwallsxof 'said sheet at the In Witness rclaimr the y foregoing I ,halve hereunto subscribed myl naine this V71th June, 1928 ,e

extensive with the thick-I f nessfofasaidgsheet: -V

preventtateralidisplacement of the. Walls y 

